53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference<BR&amp;gt;20th AIAA/ASME/AHS Adapti 2012
DOI: 10.2514/6.2012-1574
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Temperature and Frequency Effects on the Fatigue Properties of Unidirectional Glass Fiber-Epoxy Composites

Abstract: As wind turbines are likely to be installed in a wide variety of environments, knowledge of their materials mechanical properties under extreme environments is needed. The project presented herein aims at evaluating the effects of temperatures of -40 ℃, 23 ℃, and 60 ℃ on the static properties and fatigue lives of unidirectional glass-epoxy composites as found in wind turbine blades load bearing structures. Tensile and compressive static properties, as well as fatigue lives under R = 0.1 and R = −1 loading are … Show more

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Cited by 3 publications
(4 citation statements)
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“…[15][16][17] Cormier and Joncas reported large tensile and interlaminar shear strength increase for unidirectional E glass-epoxy (fibre volume fraction, v f 0.55) at 40°C, but changes in modulus were not significant. 11 A comparable tensile strength increase, as well as an increase in compressive strength, was also reported by Nijssen and Cormier 18 and Cormier et al 19 for another unidirectional glass-epoxy with v f 0.48 tested at 40°C. Early work on the topic of low temperature fatigue of glass-epoxy composites by Toth et al 20 showed that cryogenic temperatures (20 K, 253°C) led to an increase in static tensile strength and R D 1 fatigue lives in triaxial OE 45=0 3 =45=0 3 =˙45=0 3 =45=0 3 = 45 laminates.…”
supporting
confidence: 83%
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“…[15][16][17] Cormier and Joncas reported large tensile and interlaminar shear strength increase for unidirectional E glass-epoxy (fibre volume fraction, v f 0.55) at 40°C, but changes in modulus were not significant. 11 A comparable tensile strength increase, as well as an increase in compressive strength, was also reported by Nijssen and Cormier 18 and Cormier et al 19 for another unidirectional glass-epoxy with v f 0.48 tested at 40°C. Early work on the topic of low temperature fatigue of glass-epoxy composites by Toth et al 20 showed that cryogenic temperatures (20 K, 253°C) led to an increase in static tensile strength and R D 1 fatigue lives in triaxial OE 45=0 3 =45=0 3 =˙45=0 3 =45=0 3 = 45 laminates.…”
supporting
confidence: 83%
“… and Dutta . However, more recent work on unidirectional glass–epoxy by Cormier and Joncas as well as Nijssen and Cormier show improvements of mechanical properties at low temperatures. One of the possible causes for this discrepancy is the v f , which are not stated in the papers from Shen and Springer or Dutta, but that could have a significant effect on low temperature behaviour by influencing the stress distribution around fibres, increasing stress concentration with v f .…”
Section: Resultsmentioning
confidence: 97%
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